available in OBS repository, package is available both for openSUSE Leap 15 and Tumbleweed

FreeBSD

can be installed using pkg install polybar, make sure you are using the latest package branch

Gentoo

both release and git-master versions are available in the main repository

Source Mage GNU/Linux

polybar spell is available in the test grimoire and can be installed via cast polybar

You can find full list of dependencies
as well as build instructions here.

Configuration

Polybar's powerful yet simple DSL allows for extensive customization
while remaining
relatively easy to write and understand.
Here is an example of a basic date/time module that will display current date and time
in 1970-01-01 - 00:00 format, with an update interval of one second.